<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <div id="app">
    {{ name | vue_filter }}
  </div>
  <script src="https://cdn.jsdelivr.net/npm/vue@2.6.11"></script>
  <script>
    var vm = new Vue({
      el: '#app',
      data: {
        name: '老王',
        arr: ['abc', 'abd', 'jjj']
      },
      created() {
        console.log(this.arr);
      },
      filters: {
        vue_filter: function (val) {
          return val + 'aaa'
        }
      }
    })
  </script>
</body>

</html>